Because Yunnan Baiyao has the effect of stimulating the uterus and can cause miscarriage, pregnant women should not use it, whether it is taken internally or externally. Do not eat beef, mutton, beans and their processed products, fish, and sour and cold foods within one day after taking the medicine. Those with a history of allergies to Yunnan Baiyao should not use it. It should not be used by patients with severe cardiac arrhythmia. Avoid use in case of overdose or poisoning.